3 years ago

Calculate the impulse imparted when a 3,000-kg car hits a wall at 60 . m/s and comes to a stop.

Physics

1 answer:

Pani-rosa [81]3 years ago

7 0

Impulse = change in momentum

The answer is 0.

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A) A 5.75 mL sample of mercury has a measured mass of 77.05 g. The density is ___________.

Kitty [74]

Answer:

Density of the sample will be 13.4 kg/L

Explanation:

We have given volume of the sample $V=5.75mL=5.75\times 10^{-3}L$

Mass of the sample $M=77.05gram =77.05\times 10^{-3}kg$

We have to find the density of the sample

Density of the sample is given by

$Density=\frac{mass}{volume}=\frac{77.05\times 10^{-3}}{5.75\times 10^{-3}}=13.4kg/L$

So density of the sample will be 13.4 kg/L

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4 years ago

Is anyone willing to help me in physics? like school work friends?

blondinia [14]

Answer:

I'm not taking physics right now but I would love too.

Explanation:

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3 years ago

Creating a prototype and troubleshooting are steps in the development of?

balu736 [363]

Your answer is a new experiment, since it's something that hasn't been tried before, or has, but resulted in with lots of errors.

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3 years ago

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in 1984 don, disk that stayed aloft for 16.7 seonds supsuppose cain ran up a staricase during this time, reachig a height of 18.

laila [671]

Answer

given,

time of disk stayed a loft = 16.7 sec

height reached = 18.4 m

mass = 72 kg

now work done is equal to change in potential energy

$W = - (U_f - U_i)$

$W = - (mgh - 0)$

$W = - (72\times (-9.8) \times 18.4)$

W = 12983.04 J

Positive sign means that work is in the direction of motion.

$Power = \dfrac{Work\ done}{time}$

$Power = \dfrac{W}{t}$

$Power = \dfrac{12983.04}{16.7}$

P = 777.42 Watts

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3 years ago

Using information about natural laws, explain why some car crashes produce minor injuries and others produce catastrophic injuri

kicyunya [14]

The forces in some car crashes are greater than others; therefore, the body can be more severely injured by greater and more powerful forces. I hope this helped! :^)

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3 years ago